crawley



M. C- CRAWLEY TYPEWRITING MACHINE Filed July 25 192 5 Sheets-Sheet 1 INVEN TOR M. A TTORNEYJ Oct. 9, 1923.

M. c. CRAWLEY TYPEWRITING MACHINE l Filed July 25, 1922 unulmmmn 3Sheets-Sheet 2 Eg TOR 7%. BY46,Q

ATTORNE Y;

Oct. 9 1923.

M. C. CRAWLEY TYPEWRITING MACHINE 3 Sheets-Sheet 5 Filed July 25 ,1922

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, gg M 7? M A TTORNE YS Patented Oct. 9, 1923.

UNITED STATESk PATENT OFFICE.

MANSFIELD C. CRAWLEY, OF GROTON, NEW YORK, ASSIGNOR TO ADDOGRAPH COM-PANY, OF LOS ANGELES, CALIFORNIA, A CORPORATION OF CALIFORNIA.

TYPEVJRITING MACHINE.

Application medinuy 25,

To UN whom /z 'may concern Re it known that l, MANsriELD C. CRAw- Liar,a citizen ot' the United States of America, and a resident of Groton, inthe county ot' Tompkins and. Sta-te ot New York, have invented certainnew and useful Improvements in '.llypewriting Machines, of which thefollowing` is a tull and clear specifica tion. Y

This invention has relation to mechanism .tor rotating the platen rollYfor line-spacing, and it is especially adapted tor use in connectionwith a motor-driven continuously running power shaft journaled in themachine trame, key-controlled means being provided kwhereby power may betaken oli' said shaft to actuate the'line-spacing mechanism, as morefully hereinafter set4 forth.

ln the drawing, Fig.` l is a vertical sectional view ot a typewritingmachine showing one adaptation ot my invention;

Fig. 2 is a transverse sectional view of the machine, lookingrearwardly.

Fig. il is a 'fragmentary vertical sectional view oit the machine,showing the position ot the parts at the end ot a line-spacingoperation;

Fig. l is an end elevation oi the platen and associated mechanism,showing the parts as they appear in normal position, the pawlguard beingadjusted tor making a single line space;

Fig. 5 is a view similar to Fig. 4, showing Vbe pawlsguard adjusted formaking a double line space;

Fig. C is a transverse sectional view taken through the friction clutch;and

Fig. 7 is a fragmentary perspective view of the clutclroperating means.

Referring lo the various parts by numerals, l designates a countenshatteX- tending transversely ot the machine and journaled in bearings llattached to the rear wall of the machine frame, this shaft being adaptedto be continuously driven during the operation of the machine, by meansof a belt 1Q which is driven by an electric motor L3 supported on therear wall of the machine. Mounted on the shaft l() is a disklike drivingmember 14 of friction-slip clutch, this member` being formed of fiberand having its periphery tapered toward one end to torni a conoidalfriction surface. 4Member le is rigidly held to the shaft so as torotate therewith, by means of a pin 14?' flange la adapted to grip theconoidal friction surface of member l/l and cut away at :intervals at15b to torni spaced gripping portions whose radial edges iunction asscrapers during relative slipping or rotation of the clutch members andkeep the conoidal gripping surface ot member lfl tree from'oil and dirt,thereby keeping the clutch in eilic'ient rendition. Y

The slidable member 15-15 of the clutch is adapted to be pressed intoengagement with the driving clutch member 14 by means of a. verticallever 17 having a laterally bent oar pivotally held by a screw 18 to thelaterally bent forward end ot an arm 83 extending forward from the plate19 affixed to a boss on the rear wall ot the machine traine, this leverbeing oit resilient sheet metal so asy to laterally leX or yield, andbeing provided with a 'forked upper end 20. AY forwardly bent lug 2l, onthe upstanding arm 22 ot a bell-crank lever QQ'pivoted at 23 on a bosson the rear traine wall, is adapted to press inwardly against the outerface of lever 17 at the lower end of said lever 17. The lever 22 isadapted to be rocked on its pivot by a line-space keyf lever 24 whoserear end 25 extends upwardly so as to engage in a notch formed .in theunder edge of the outwardly extending arm of said lever 22. With thismechanism, it will be seen that depression ot the ke i carrying end otthe lever 24; Causes lever` 22m-22 to rock the upper end 'l lever i7outward to press clutch member l5-l5 against clutch member la, thuscausing said member 11S-15b to rotate.

Ahixed rigidly to the loose clutch member l5-l5b is a toothed pinion 26which. is in constant mesh with the teeth of a segment 27 pivotallysupported at 28 on an arm 28a extending forwardly from plate 19 to rockfore-and-aft of the machine. The lower end or". the swinging segment isbifureated to form two separated stop-fingers 29 which are adapted toalternately abut against opposite ends of a double-end or duplex rubberbumper or stop 30 supported on the laterally bent forward end of an arm3l on plate i9. said stop being adjustable foreend-aft:

of the ina-chine by bending the laterally 'extending portion of thesupporting arm 31. Pinion 26 is sutliciently long to engage seg* ment 27in all shi'l'ftedvpositions of clutch member 15. A washer 16 is looselymounted on shaft between the forked end 20 of clutch lever 17 and theinner end off pinion 26.

The ysegment 27, at 'apoint abovei its pivot, is connected by means ofay linl; 32 to the lower end ol a rock arm the upper endot which isl'ormed integrally with one end y'oit rock shalt 34 of channel form incrosssection and des-irably formed of sheet metal. vThe shaft 34roclably mounted on -pivots 35 supported on a stationary part Y of themachine frame, Vthe axis oit this roel( 'the parts are in normalposition.

shaft being located at a point below and to 4the'rear` of the platen.Atlixed4 to the other end olthe rock shatt 34, and` 4preterably forinedintegrally therewith, is an vsurface of the roller so that the roller atall times runs square on the [lange while y This tlanffe is a aart ot a.rail 39 which travels with the platen carriage 5i' 'and extenos a'tterdescribed.

transversely ot the machine, sai d rail being as long as 'themaximum-distance o'l" travel oit the ca'rriage,so that in all positionsolthe carriage engagement ot the roller 87 with the rail will be maintaied. The carri'age o? travels transversely ot the machine trarne 58 onsuitable bearings 59, The rail is carried by a pair of arms 40 which eX-tend downwardly and rearwardly and are pivoted .on a rod 60 supported atits ends in dependino flanges 41 on ythe carriages, so that the rail 39is capable of upward and rearward sii/'inging movement relatively to theplaten supporti-ng shift traine herein- A hook 42 'formed on the arm 36extends; upwardly behind the rail llange 38, so as to thereby interlockthe rail with the roller 37 and arm 36 and thus Vpawl 44 whose curvedforward end is bent inward to provide a tooth 45 positioned to engage inthe teeth or 'a ratchet wheel 46 held to one end ot the platen 61 torotate with Vsaid platen. An upstanding hook 49,l

engaging 'over the pand-44, vassists inguiding the `p'awl in 'itsmovements and, for the purpose of varying the line-spacing l provide ajpivoted regulating device or .pawlguard 56. Thehool 49 is 4formed on aplate Y anc y62 Vheld to one of the side plates 51 of the line-spacepawl normally rests with its tooth 'Y 45 out of engagement with theteeth of ratchet wheel 46. A detent lever' 53 is pivoted at its lowerend on plate 51, and a roller 65 on the upper end of said lever isyieldably held against the toothed edge ot' the ratchetwheel by a spring66 connecting the lever and plate 51 to prevent accidental rotation ofthe platen, as is usual in linespac'ing mechanisms. Y y

lThe platen shaft 67 is jonrnaled in 'bea-rings in the side plates 51ofthe shift trarne,V which are pivotally connected to the fon ward ends0l two pairs of superposed parallel links 525 The two `upygieir linksare rigidly connected at their rear ends Vby a sleeve 69 rotatable on arod T0 Supported in flanges 4lon the side rails of the platenCafrriageAT, while Vthe two lower links' are pivota'll-y 4held at theirrear ends to the pivot rod 60V and are rigidly connected byA a rail 71with which suitable mechanism (not shown) is connected tor moving` theAshift frame and l platen upwardly lor printing upper-case characters."The side flanges of the carriage are Alnovided with yslots 68 .in whichhe' platen shalt. is movable up and down in case-shitting' operations.olf case-shift mechanism for actuating the shitt trame is shown in myPatent 1,455,109,

'dated May 15, 1923.

As rail 39 and arm 43 thereon are mounted. ou one of the pivot rods oithe shift frame, it i yill be obvious that the .relation between theseparts and arm 36 will not lbe changed by the ,upward movement of thesh-itt traine and platen lto upper-case position. It will also beobserved that a line through he pivot 47 of the pawl and its point ofsupport on regulator 50 is substantially parallel with links 52, andthat the case-shift movement will not interfere with the proper actionot' the pawl on the ratchet wheel, lt will also 'be noted that arms 40of the rail arm 36 are soarranged and pivoted as to swing substantiallyin parallelism so that there is practically no canting action oit roller37 relatively to the rail flange 138.

The regulating device 50 is shittable to either of two positions, asshoe/'n in Figs. 4

A desirable form and `5, to Adetermine wl'iethe-r the `tooth 45 or pawl44 shall drop in front of the irsttooth oit ratchet wheel 46 forward lofjhqolg 49, or

in tro-nt et the second .tooth in advance .of

rear edge of pawl tooth 45 with the torward edge of the upstanding shankof hook 49. A'resilient laterally flexible detent arm 72 on the sheetmetal regulating device 50 has a portion thereot pressed inward to forma stud 73 adapted to snap in either of two depressions 74 in plate 62 tofrictionally hold the regulating device in its different adjustedpositions. A lug or limiting stop on plate 62 arrests the swingingmovement ot the regulator at the two positions shown in Figs. 4 and 5 toprevent overthrow of the regulator by the operator in adjusting saidregulator. The shank of hook 49 is formed with a cam lug 76 on itsforward edge, the lower edge of which lug inclines downward and rearwardand is engaged by pa'wl tooth 45 duringv the latter part of the rearwardor active line-spacing movement of pawl 44. A restoringr spring 77connects key lever 24 with a stationary 'trame plate 78, said leverbeing pivot-ally supported on a fulcrum rod 79 mounted in the machineframe. f

Nith the parts in normal position, as shown in Figs. 1 and 2, when it isdesired to rotate the platen 61 for linespacing the operator depressesand immediately releases the key on key lever 24. `The downward movementof the key causes the parts to practically instantly assume thepositionsshown in Fig. 3. The upward movement ot the rear end 25 of the key levercauses lug 21 on arm 22"L of lever 22 to press inward on the lower endof the clutch shitting lever 17 thus rocking the forked upper end 2O otlever 17 outward and pressing the .driven member 15 oi? the clutchagainst the driving clutch member 14. Clutch member 15 and pinion 26 arethereby rapidly rotated to rock segment 27 until its forward vstopfinger 29 abuts stop 30, when these parts will be arrested and member 14will slip or rotate relatively to member 15. This movement of segment 27causes link 32 to rock arm 33 on the rock shaft 34 forwardly, thusswinging arm 36 on said shaft upwardly and rearwardly. This movement of'arm 36 swings the U-shaped frame 39-40 and the arm 43 thereon upwardlyand rearwardly, thus pulling pawl 44 rearwardly, whereupon the tooth 45of the paw]V will drop oft regulator 50 in front of a ratchet wheeltooth and rotate the ratchet wheel and platen one or more line spaces,according to the adjustment ot the regulator. As tooth 45 movesrearwardly it engages the inclined lower edge of cam lug 76 on hook 49and isjammed down between two adjacent teeth of the wheel and againstthe forward edge of the shank of hook 49 at the end of the rearwardmovement of the pawl, to positively lock the ratchet wheel and platenagainst overthrow. A coil spring 8O connects pawl 44 with one of thelinks 52 of the shift trame and serves to snap the tooth of the pawldown into engagement with the teeth of the ratchetl wheel as thepawl isdrawn rearward.

The parts will remain in this shitted po sition until the operatorreleases the key lever 24. Upon release of the key lever 24 a retractilecoil spring 54, connecting the lower end of rock arm 33 to an earcarried by the aforesaid plate 19, will restore all the parts to normalposition, ready for another operation. The interlocking arrangementbetween the arm 86 and the rail 39 will ensure the return to normalposition of the line-spacing pawl. The rear stop finger 29 on thesegment 27 will abut the rear tace of the stop 30 and thus arrest theparts in proper position for another operation. Inasmuch as theoperation orn the mechanism is exceedingly quick after the clutchmembers are brought into contact, it is practically impossible :tor theoperator to release the key on the key lever 24 before the line-spacingoperation is completed; hence it is desirable that there shall be aslipping action. at some point in the power-driven means. For thisreason I have found it highly advantageous to employ a friction-slipclutch and put the same into action by manual torce exerted through thekey lever. The clutch shown is practically noiseless in operation. Ihave found that it requires but very slight pressure to cause the clutchto Actuate thc line-spacing mechanism, and consequently the clutchmembers readily slip oneon the other. To prevent a too great degree ofpressure being brought upon the clutch members through the medium of thekey lever, I provide the key lever with a stop lug 55 whichy is adaptedto strike against a rigid transverse frame bar 56 supported at its endson bosses 81 on the side walls of the machine frame, and to stillfurther provide against a too severe thrust on the fric.- tion clutch Imake the depending end of the sheet metal lever 17 resilient, so that itwill laterally yield when the line-space key is depressed and thusensure alight, resilient pressure on the slidable member ot kthe clutch.The platen may be freely rotated in either direction by the usual fingerwheels 82 on the ends of the platen shalt.

The line-space-pawl 44 is provided with a rearwardly-extendingfinger-piece 48 for convenience in disengaging the pawl from therachet-wheel carried by the platen when the platen is rotated by hand`tor line-spacing.

This application is a substitute in part for my previously-tiledcopending application Serial No. 310,996, filed July 15, 1919.

What I claim is:

1. In a typewriting machine hai/*ing a rotatable platen mounted on thecarriage, means mounted on the carriage for rotating said platenembodying an interlocking- .llO

line-spacing member, a ypower-shaft and amotor ster continuouslydrivingit, actuating-means driven from the poweiesha'it rto actuate thelinespacing means jon the carriage embodying another intedocking-member,one oi said intedocking-members consistingof a rail extending the lengthof Ytravel of fthe carriage and the other interlocking-membcr consietingof an arm having continuons interlocking engagement with the aforesaidmember, and key-controlled vn'leai'is for connecting the power-shaft tosaid actuati-ng'mea-ns.

2. In .a typewriting machine embodying a .motor and a shaft driventherefrom, .a f. inechanisr'n adapted to be clutched to said shaft,Grey-controlled 'mechanism for operating iclutch, said clutch beingaini/tional yone eo as to ada-ptit .to slip, a positive stop for thelineespacing mechanism being provided so that `the clutch will slipafter lthe.line-spating mech anismf'is operated'i-lts full throw. n

lun a 'typew-riting machine, continuonsly-driren power-shaft, a triction.clutch on said shaft, yhey-controlled .means :tor operating theline-spacing mechanism from this clutch embodying a pin-ion carried .byone/oi the Vclutch-members and a pivoted segment in constantmesh withsaid pinion.

1l. ln a typewriting machine, a continuonslydriven power-shaft andkey-controlled means for 4operating ythe linespacing mech-- `einem olthemachine from said powcreshaft embodying 'a slip-clutch adapted to beput into operation and held in operation by the fili' manual forceYapplied to said lkey, whereby when the line-spacing operation isconipleted beifore'the lr Y 'is released a slippage may occur in the"clutch, a pinion and segment mechanism operated by said clutch, andvmeans for arresting the movement oil the segment when the dine-.spacingaction is completed. p

ln a typewriting machine embodying a vcarriage carrying a rotatableplaten, means on the carriage `tor rotating the plate-n em.- bodying arail extending the length of' travel ol theycarriage and mounted on armsextending upwardly and `forwardly, actuating meansV for saidline-spacing mechanism embodying a pivotal A mated `arm extend ingupwardly and if iward'ly in substantial parallelism withthe armscarrying said rail and having continuons interlocking engagement withsaid ra-il, la continuously-'rnnning power-shaft and amotor foractua-ting'the same, and key-controlled devices forcennectingsaidpower-shaft to said yactuating means! c e. 'ln apowerftypewritingmachine, a linespacing mechanism and a' stop for arrest ing the'samewhen it has operated its full Y throw, and power means for operatingsaid mechanism embodyi o' friction-slip dri.f'i-ngelements to permit theloperating-rne 1harnsm S. In awtypewriting machine, poirier-opel.

ated l ey-controlled eline-spacing mechanism embodying a rail on thecarriage adapted to be lswung upwardly and rearwardly, and meansconnected thereto for rotating the platen.

Q .ln a typewriting machine, power-operated ]rey-controlled line-spacingmechanism en'ibodying a rail movable upwardly and downwardly andsupported entirely on the carriage, means connected to the railV forrotating the platen, and a device for actuating th-e rail having arolleradapted to travel along` the rail, and a hook-member forinterlocking with the rail, :for the purpose set forth.

l0. In a typewriting machine, a poweroperated key-controlledline-spacing mechanisniv embodying a rearwardly-swinging arm carrying aroller, aV movable rail on the carriage adapted to bev engaged byvsai-d.

mechanism into action, segment adapted to be shifted by the drivenmember of the clutch Vand proifide-d with a' pair of separatedstop-firgers,y and a stop supported'be- ,tween saidlingers, said stopbeing carried by an arm adapted to be permanently bent for adjusting thestop.

In Ia typewriting machine, Va power! operated line-spacing mechanismembodying a slip clutch, land lreyoneans #for putting said clutch intoaction embodying a key# lever, an inte rmediateleafer `actuated by saidkey-lever, and a resilient lever having one end vin lengagement with,said in mediate lever and its other end in engagement with the movablemember o'lf the clutch.

le. ln typewriting machine, power-op erated line-spacingl mechanism andkey-con` trolled in ans tor putting' the same into action, saidmechanism embodying a rockable horizontal shaft supported to the rear oftl e platen and having at one end an arm adapted to actuatc theplaten-rotating devices and having a depending arm at its other endadapted to be actuated by power.

'l5` In a typewriting machine, mweractuated line-spacing mechanism, aiiriction-slip clntch it'or puttingthe same into action, keynicans loractuating this clutch, one member of said clutch being formed ofseparated edged members for the purpose o'l1w lightly scraping theYfrictlonliace of the opposite member.

i6. ln a typewriting` machine, power-act ated line-s1 icing mechanism, afriction-slip clutch for putting' the' same into action, keymeans :toractuating this clutch, one member of said clutch being formed ofseparated portions having radial edges or the purpose of lightlyscraping,` 'the 'friction-'tace oit' the opposite member.

l?. In ,a typewritingr machine, a continu` ousljv--running motorflrivensha'jt arranged transversely at the rear of lthe machine,clntch-inembers ou said shaft, key-lever means 't'or putting said clutchinto action, line-spacinr means operated 'from the driven nen 4Jr olisaid clutch, and means 'for stopping said line-spacing mechanism whenthe spacingoperation is completed irrespective oi" the relation oit theclutch-members.

18. ln a typewriting machine having, a traveling carriage carrying arotatable platen, a power-shaft journalcd at the rear oi the machine, amotor for continuously running said shaft, platenrotating devices on thecarriage, mechanism supported on the frame of the machine for operatingthe platen-rotating devices and having continuous connection therewithso as to be capable of rotating the platen in all positions of thecarriage, devices 'for connecting said mechanism with the power-shaft insuch manner as to actuate the same, and key-actuated means for puttingsaid devices into action.

19. In a typewriting machine having a carriage carrying a roller-platenmounted on a pivoted ranie capable of up and down movement for change incase, a line-spacing mechanism n'iounted on the carriage embodying amember piyoted co-axially with the pivot of said case-shifting iframeand carrying at its upper end a pivoted pawl adapted to rotate theplaten ilor line-spa ing, an actuating mechanism having an up standingmember held in constant engage` ment with the inember of the linespacingmechanism, and key-controlled power mechanism 'for operating saidactuating mechanism for causing a line-spacing` rotation oi? the platen.

In testimony whereof I hereunto affix my signature.

` MANSFIELD C. GRAl/VLEY.

